I participated in the Global Day of Coderetreat, practicing on the Game of Life Kata and heard that some people solved the problem of finding neighboring cells with a Cartesian Product. I did not see their solution, but tried out figure out my own solution. I learned something about JavaScript, functional programming and performance, which I will share in this article.
I attended SoCraTes 2017 in Soltau. SoCraTes is an “Unconference”, where the participants set their own agenda and come up with topics for their sessions. Sessions can be presentations, workshops and open discussions. Here are the notes from some of the sessions I attended: Programming Exercise: Banishing State The example of this exercise was taken from a real-life project: A book indexing service that takes keyword/page number pairs as input and outputs either the page number, a range of page numbers or nothing, depending on previous inputs.